Hair and nails are derived from cells of the

A. skin.

B. bone.

C. blood.

D. fat tissue.

What holds non-sister chromatids of homologous chromosomes together in prophase i of meiosis?

How does phloem differ from xylem? O A. Phloem is made of cells. O B. Phloem has a two-way flow. O C. Phloem is found in the roots. O D. Phloem transports chloroplasts.

How stress may increase risk of heart disease and stroke

Which will form an ionic bond

Which of these rocks forms from lava that cools very quickly? A) schist B) gneiss C) granite D) obsidian

Why is an angioplasty an incorrect treatment for an aneurysm? A) Aneurysms cannot be treated. B) An angioplasty may rupture the blood vessel wall. C) An angioplasty can have dangerous drug reactions. D) Aneurysms are treated only with pacemakers.

Why was nucleic acid disregarded for so long as the molecule responsible for the transmission of hereditary information?

Sally's estimated energy requirement, based upon her age, height, and weight, is approximately 2000 kcalories per day. What is the maximum number of kcalories per day that she can consume to lose 3 pounds per month. Assume 1 month is 30 days. a.

Which hormone causes the regrowth of the endometrial lining of the uterus? testosterone estrogen GnRH progesterone

78.44 meters to centimeters